Merge Presentation

How to merge PPTX presentations

GroupDocs.Merger exposes powerful and easy to use API to merge PowerPoint and Open Document presentations of PPT, PPTX, PPS, PPSX and ODP, OTP formats. Presentations can be combined as a whole or on a page by page basis depending on your requirements. The big advantage of GroupDocs.Merger is that presentations can be merged programmatically without any third-party software installed (like Microsoft PowerPoint or Open Office) or manual work.
GroupDocs.Merger combines presentations with all their content with no quality and data loss - text formatting, comments, animations, smart arts, shapes, etc.

GroupDocs.Merger API provides different overloads of join method to combine additional files with the source document loaded into Merger object. 

  • join(String) - allows to merge document provided via file path on a local disk; 
  • join(InputStream) - provides an ability to combine documents loaded from any source - memory stream, remote URL etc.;
  • join(StringIJoinOptions) - is used for merging specific pages for document stored at local disk; 
  • join(InputStreamIJoinOptions) - used for merging specific pages from document provided as a stream.

The following example demonstrates how to merge presentations with several lines of code:

Merger merger = new Merger(@"c:\presentation1.pptx"); 
merger.join(@"c:\presentation2.pptx");
merger.save(@"c:\merged.pptx");

Code Examples

Please find more use-cases and complete Java sources of our backend and frontend examples and try them for free!

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